I think the 4 hour week is a red herring.

IIRC the author did it by making a business more efficient and use less of his time. But his starting point was an insanely successful business. That's the prerequisite for following his steps!

Alternatively he suggests getting a job you can work remotely then outsource cheaply to take yourself out of the equation. Yeah right. Good luck with that!

The goal really is to build enough wealth so that you can work 0 hours per week. Probably doable by investing wisely and cutting back on lifestyle.